David LaChapplle is famous for his sexy, colorful, highly saturated and fetish-y images; if you saw Rihanna's latest video, "S&M" — with its latex and riotous hues — you may have thought it was a great example of LaChappelle's work. The problem is, he didn't direct the clip. So he's suing. »2/15/11 1:01pm 2/15/11 1:01pm